Amun-her-khepeshef (also Amun-her-khepeshef B) was the eldest son and appointed heir of Pharaoh Ramesses III. Like at least another of his brothers, he was named after a son of Ramesses II, Amun-her-khepeshef.  He died when he was about fifteen years old.
He is also mentioned as Ramesses Amun-her-khepeshef. He is not identical with his brother Ramesses VI, who was also called Amun-her-khepeshef before he became pharaoh.